# Elephas vs Thatdidhappen

The clearest difference is price: Elephas at Free against Thatdidhappen's $2.99. Thatdidhappen's advantage is in-app purchases (none vs 6) and update cadence (every 3 days vs every 5 weeks). On ads and device support there is nothing between them.

Elephas is free to download; Thatdidhappen costs $2.99 up front. Elephas sells 6 in-app purchases, starting at $6.99 per month. Thatdidhappen asks for nothing beyond the download.

Elephas ships an update every 5 weeks, Thatdidhappen every 3 days. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Elephas | Thatdidhappen |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[2.5 (12 ratings)](https://appshunter.io/ios/app/elephas-secure-ai-for-files/id6444680023/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 26.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | Freemium | — |
| Size | 68 MB | 2 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Selvam S](https://appshunter.io/developer/1656063492) | [ADHOCON GmbH](https://appshunter.io/developer/1858708318) |

## What reviewers say

### Elephas

[App page](https://appshunter.io/ios/app/elephas-secure-ai-for-files/id6444680023)

Transform your documents, notes, and research into a conversational AI knowledge base. Ask questions and get instant answers with source citations, organize information into separate project brains, and sync across devices. Enhance your writing with an AI keyboard.

**Highlights:** Chat with files, docs, and notes, Instant answers with source citations, Multiple knowledge brains for projects, Seamless Mac and iPhone sync, AI writing keyboard for iOS, Supports 20+ file formats, Semantic search and knowledge graph

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Monthly | $6.99 | per month |
| Pro Monthly | $19.99 | per month |
| Pro Plus Monthly | $29.99 | per month |
| Standard Yearly | $69.99 | per year |
| Pro Yearly | $199.99 | per year |
| Pro Plus Yearly | $299.99 | per year |


### Thatdidhappen

[App page](https://appshunter.io/ios/app/thatdidhappen-protocol/id6757167013)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Elephas free?

Elephas is free to download, with in-app purchases available.

### Is Thatdidhappen free?

Thatdidhappen costs $2.99, with no in-app purchases.

### Do Elephas or Thatdidhappen have ads?

Neither Elephas nor Thatdidhappen shows ads.

### Which is updated more often, Elephas or Thatdidhappen?

Elephas ships an update every 5 weeks, and Thatdidhappen every 3 days. Most recently, Elephas was updated on October 15, 2026 and Thatdidhappen on October 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*